Futurama - Season 4 Episode 01: Kif Gets Knocked Up A Notch

Description
Season 4 opens with a mishap involving a microwave oven and a supernova throwing the Planet Express staff back in time to 1947 where Fry has a fateful encounter with his grandparents, Dr. Zoidberg meets Pres. Truman and Leela & Prof. Farnsworth wreck an Air Force base.